Environmental Finance: Half of the world’s energy companies believe that there is a “real risk” of a bubble in the renewable technology sector, according to a KPMG report released this week. Turning up the Heat, a global survey of more than 200 senior executives in the energy sector, reveals that these fears are even more prominent in Europe, where nearly two-thirds of those questioned fear a bubble. Of respondents who had considered but not completed a renewable energy acquisition, 44% cited the seller’s …